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W83195AR-WE PDF预览

W83195AR-WE

更新时间: 2024-11-19 22:23:19
品牌 Logo 应用领域
华邦 - WINBOND 时钟
页数 文件大小 规格书
10页 177K
描述
200MHZ 3-DIMM CLOCK FOR WHITNEY CHIPSET

W83195AR-WE 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
Reach Compliance Code:not_compliant风险等级:5.92
JESD-30 代码:R-PDSO-G56JESD-609代码:e0
端子数量:56最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:SSOP封装等效代码:SSOP56,.4
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, SHRINK PITCH
电源:2.5,3.3 V认证状态:Not Qualified
子类别:Clock Generators表面贴装:YES
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:0.635 mm
端子位置:DUALBase Number Matches:1

W83195AR-WE 数据手册

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W83195AR-We  
200MHZ 3-DIMM CLOCK FOR WHITNEY CHIPSET  
1.0 GENERAL DESCRIPTION  
The W83195AR-We is a Clock Synthesizer for Intel Solano chipset. W83195AR-We provides all  
clocks required for high-speed RISC or CISC microprocessor and also provides 64 different  
frequencies of CPU, SDRAM, PCI, 3V66, IOAPIC clocks frequency setting. All clocks are externally  
selectable with smooth transitions.  
The W83195AR-We provides I2C serial bus interface to program the registers to enable or disable  
each clock outputs and provides 0.5% and 0.75% center type spread spectrum to reduce EMI.  
The W83195AR-We accepts a 14.318 MHz reference crystal as its input and runs on a 3.3V supply.  
High drive PCI and SDRAM CLOCK outputs typically provide greater than 1 V /ns slew rate into 30  
pF loads. CPU CLOCK outputs typically provide better than 1 V /ns slew rate into 20 pF loads as  
±
maintaining 50 5% duty cycle. The fixed frequency outputs as REF, 24MHz, and 48 MHz provide  
better than 0.5V /ns slew rate.  
2.0 PRODUCT FEATURES  
·
·
·
·
2 CPU clocks  
12 SDRAM clocks for 3 DIMMs  
8 PCI synchronous clocks.  
Optional single or mixed supply:  
(VddR = VddP=VddS = Vdd48 = Vdd3 = 3.3V, VddLAPIC=VddLCPU=2.5V)  
Skew form CPU to PCI clock -1 to 4 ns, center 2.6 ns  
Smooth frequency switch with selections from 66.8 to 200 MHz  
I2C 2-Wire serial interface and I2C read back  
0.5% and 0.75% center type spread spectrum  
Programmable registers to enable/stop each output and select modes  
(mode as Tri-state or Normal )  
·
·
·
·
·
·
·
Two 48 MHz pins for USB  
24 MHz for super I/O  
·
56-pin SSOP package  
Publication Release Date: July 1999  
Revision 0.51  
- 1 -  

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